91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <cammy/image.h>
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#include <cammy/photo.h>
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#include "commands.h"
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static void usage(int argc, char **argv, const char *message, ...) {
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if (message) {
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va_list args;
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va_start(args, message);
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vfprintf(stderr, message, args);
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va_end(args);
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fprintf(stderr, "\n");
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}
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fprintf(stderr, "usage: %1$s merge input.png output-r.png output-g.png output-b.png\n", argv[0]);
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exit(1);
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}
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int cammy_merge(int argc, char **argv) {
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cammy_image *image_in_r,
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*image_in_g,
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*image_in_b,
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*image_out;
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if (argc < 3) {
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usage(argc, argv, "No red input file provided");
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} else if (argc < 4) {
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usage(argc, argv, "No green input file provided");
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} else if (argc < 5) {
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usage(argc, argv, "No blue input file provided");
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} else if (argc < 6) {
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usage(argc, argv, "No output PNG filename provided");
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}
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if ((image_in_r = cammy_image_open(argv[2])) == NULL) {
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goto error_image_open_r;
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}
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if ((image_in_g = cammy_image_open(argv[3])) == NULL) {
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goto error_image_open_g;
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}
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if ((image_in_b = cammy_image_open(argv[4])) == NULL) {
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goto error_image_open_b;
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}
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if ((image_out = cammy_image_merge(image_in_r,
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image_in_g,
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image_in_b)) == NULL) {
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goto error_image_merge;
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}
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if (cammy_image_save(image_out, argv[5]) < 0) {
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goto error_image_save;
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}
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cammy_image_destroy(image_out);
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cammy_image_destroy(image_in_b);
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cammy_image_destroy(image_in_g);
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cammy_image_destroy(image_in_r);
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return 0;
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error_image_save:
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cammy_image_destroy(image_out);
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error_image_merge:
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cammy_image_destroy(image_in_b);
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error_image_open_b:
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cammy_image_destroy(image_in_g);
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error_image_open_g:
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cammy_image_destroy(image_in_r);
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error_image_open_r:
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return 1;
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}
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